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A Gram-staining-negative, non-flagellated, non-gliding and rod-shaped bacterial strain, designated PDB-16T, was isolated from seawater from a seaweed farm on the South Sea in Korea, and its taxonomic position was investigated using a polyphasic approach. Strain PDB-16T grew optimally at 30 °C, at pH 7.0–7.5 and in the presence of 2 % (w/v) NaCl. A neighbour-joining phylogenetic tree based on 16S rRNA gene sequences revealed that strain PDB-16T formed an independent lineage within the evolutionary radiation encompassed by the family Flavobacteriaceae . Strain PDB-16T contained MK-6 as the predominant menaquinone and iso-C15 : 0, iso-C15 : 1 G and iso-C17 : 0 3-OH as the major fatty acids. The major polar lipids detected in strain PDB-16T were phosphatidylethanolamine and two unidentified lipids. The DNA G+C content of strain PDB-16T was 42.1 mol%. Strain PDB-16T exhibited very low 16S rRNA gene sequence similarities of less than 89.7 % to the type strains of any bacterial species with validly published names and less than 90.1 % to uncultured bacteria clones. The 16S rRNA gene sequence similarity values and the differences in phenotypic properties between strain PDB-16T and some phylogenetically related genera were sufficient to support the proposal that strain PDB-16T should be distinguished from previously known genera of the family Flavobacteriaceae . On the basis of the data presented, strain PDB-16T is considered to represent a new genus and novel species, for which the name Sungkyunkwania multivorans gen. nov., sp. nov. is proposed. The type strain of Sungkyunkwania multivorans is PDB-16T ( = KCTC 32138T = CCUG 62952T).
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